APES UNIT ONE EXAM WITH 100%
CORRECT SOLUTIONS
Commensalism ex - ANSWER-Birds nesting in tree
interaction between two organisms where one benefits, and one is neutral
Define biome - ANSWER-An area that shares an average yearly temperature and
precipitation pattern
Define Primary Productivity - ANSWER-RATE at which plants/producers in an area
convert sunlight into glucose or other biological molecules
Define respiration loss - ANSWER-the energy a plant (or any organism) uses up for its
own cellular respiration
dentify a biotic and abiotic form of N fixation - ANSWER-Biotc (LIVING): Soil bacteria/
Rhizobacteria (bacteria that has a detrimental effect on plant growth)
Abiotic (NON LIVING) : Lightning strikes/FF combustion
Describe ammonification (nitrogen cycle) - ANSWER-soil microbes or bacteria
converting organic matter/waste into ammonium (NH4) /ammonia (NH3)
Describe an adaptation of the mangrove tree that enables it to tolerate the salinity levels
of estuaries - ANSWER-1. Thicker membranes/leaf pores that prevent salt from
entering/pump salt out
2. Stilt-like roots that prop plants up and out of the water/provide an anchor against
waves/tides
Describe assimilation (nitrogen cycle) - ANSWER-plants taking in nitrogen from the soil
or animals taking in nitrogen by eating plants
Describe denitrification: nitrogen cycle) - ANSWER-soil bacteria converting NO3/NO2
into N2O/N2 gas
Describe how a decrease in the populations of secondary consumers in an ecosystem
would impact both the primary consumer level and the primary producer level: -
ANSWER-with decreased numbers of secondary consumers, primary consumer
CORRECT SOLUTIONS
Commensalism ex - ANSWER-Birds nesting in tree
interaction between two organisms where one benefits, and one is neutral
Define biome - ANSWER-An area that shares an average yearly temperature and
precipitation pattern
Define Primary Productivity - ANSWER-RATE at which plants/producers in an area
convert sunlight into glucose or other biological molecules
Define respiration loss - ANSWER-the energy a plant (or any organism) uses up for its
own cellular respiration
dentify a biotic and abiotic form of N fixation - ANSWER-Biotc (LIVING): Soil bacteria/
Rhizobacteria (bacteria that has a detrimental effect on plant growth)
Abiotic (NON LIVING) : Lightning strikes/FF combustion
Describe ammonification (nitrogen cycle) - ANSWER-soil microbes or bacteria
converting organic matter/waste into ammonium (NH4) /ammonia (NH3)
Describe an adaptation of the mangrove tree that enables it to tolerate the salinity levels
of estuaries - ANSWER-1. Thicker membranes/leaf pores that prevent salt from
entering/pump salt out
2. Stilt-like roots that prop plants up and out of the water/provide an anchor against
waves/tides
Describe assimilation (nitrogen cycle) - ANSWER-plants taking in nitrogen from the soil
or animals taking in nitrogen by eating plants
Describe denitrification: nitrogen cycle) - ANSWER-soil bacteria converting NO3/NO2
into N2O/N2 gas
Describe how a decrease in the populations of secondary consumers in an ecosystem
would impact both the primary consumer level and the primary producer level: -
ANSWER-with decreased numbers of secondary consumers, primary consumer
